69% of flights from Denver to Appleton arrived on time over the past 12 months. That is worse than the typical U.S. route. 12% of flights arrived more than an hour late or not at all.
How late?
The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for DEN → ATW: when a flight was late, it was under 45 minutes late 55% of the time. About 1 in 10 flights landed an hour or more late, and 1 in 68 three hours or more; 1.0% were cancelled outright.
- On time or early69%
- 15–30 min late9.0%
- 30–60 min late11%
- 1–2 hours late7.1%
- 2–3 hours late1.7%
- 3+ hours late1.5%
- Diverted0.5%
- Cancelled1.0%
Share of all 410 scheduled flights, past 12 months, by arrival time against schedule.
By airline
| Airline | Flights | On time | Cancelled | Typical arrival | 1h+ late | Avg when late | Operated by |
|---|---|---|---|---|---|---|---|
| United Airlines | 364 | 69% | 1.1% | −5 min | 8.5% | +54 min | SkyWest 72%, United Airlines 28% |
| Allegiant Air | 46 | — | — | — | — | — | Allegiant Air |
Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.
Best time of day to fly
On-time rate by scheduled departure hour (local time at DEN). Delays build through the day as late planes knock on, so early flights usually do best.
By airline and hour
| Departs | United Airlines |
|---|---|
| 5 p.m. | 69% |
By month
Each calendar month pooled over 2023–2026. Best: April (78%). Worst: July (65%).
By day of week
| Day | Flights | On time | Cancelled |
|---|---|---|---|
| Monday | 68 | — | — |
| Tuesday | 52 | — | — |
| Wednesday | 52 | — | — |
| Thursday | 59 | — | — |
| Friday | 67 | — | — |
| Saturday | 52 | — | — |
| Sunday | 60 | — | — |
Why flights were late
Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.
Cancellations: weather 4
Month by month
Not enough months with data to draw a trend.
Questions
How often are flights from DEN to ATW on time?
69% of 410 scheduled flights from Denver, CO to Appleton, WI arrived within 15 minutes of schedule between September 2025 and August 2026. 1.0% were cancelled.
What month has the most delays from DEN to ATW?
July (65% on time). The best month is April (78%), over 2023–2026.
Related
- ATW → DEN (return)
- Denver (DEN) delays by hour
- Flights into Appleton (ATW)
- United Airlines on-time record
- Allegiant Air on-time record
- Connecting off this flight? Check the risk
Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.